N2A Cards (for Nook Color)

N2A Cards (for Nook Color) : Card Slot

With the Nook Color powered off, you insert the card, and then turn on the Nook Color. You’ll be greeted by a screen normally reserved for telling you "you broke something," but in this case it’s a setup screen that lets you decide, each time you boot the device, whether you want to boot into the Nook Color’s standard OS (which is based on Android, but looks nothing like it), or into full Android.